Type-writing machine.



G.- H. VOGEL.

TYPE WRITING MACHINE. APPLICATION FILED 111mm, 19111.

Patented Dec. 2, 1913.

4 SHEETS-SHEET 1.

ATTOR EY.

INV ENTO R:

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INVENTOR: WWW

ATTO R N EY.

w H. \COGEL. TYPE WRITING MACHINE. 7 APPLICATION PILBD'IAUG. 1B, 19 11.

.Patented Dec. 2, 1913.

4 BHEETS-$HBET 3.

IINVE'NTOR: $M 0 WITN ESSES:

1 ATTORNEY c. H. VOGEL. TYPE WRITING MACHINE. APPLICATION FILED AUG. 18, 1911. 1,079,963. I Patented Dec.2,1913.

4 SHEETS-SHBET 4.

INVENTOR:

WITNESSES:

ATTORN Y.

UNITEDSTATES PATENT OFFICE.

cmtns H. VOGEL, onmtms, :Bnmsn commnm, serum, ASSIGNOR r UNDEBWOOID 'IYPIIEZTKTIRJII'IEB 001mm, 01' NEW YORK, N. Y., A'CORPORATION OF DELAWARE.

ma-wmme mcnnm Specification of Letters ratent. Application med August s, 1911'; Serial No. 644,728.

Patented Dec. 2, 1913.

To all whom it may concern:

Be it known that 1, CHARLES H. Vomit, a British subject, residing in Vancouver, in the county of Vancouver, Province of British Columbia, Dominion of Canada; have invented certain new and useful Improve ments in Type-Writing Machines, of which the following is a specification.

The present invention relates to mechaw .nism operated by pneumatic or like powe.:, for driving in letter-feed direct1on, and for returning, the carriage of a typewriter, and for operating the line spacer thereof; all under the control of suitable keys.

More particularly the invention relates to a construction and arrangement of the controlkey connections, whereby a number ofdifferent operations may be performed, depending upon the manner in which the keys W are operated, to wit:-'a construction and arrangement of key-controlled connections, for returning the carriage at any desired speed, and for varying the speed of return from line toline without special setting of the apparatus: for returning the carriage at a predetermined and uniform speed upon a certain operation of the key connections (as where the return is made from a full line), and for varying the speed according W to the lengthof the line or for. other reasons, by a special operation of the key connections at other times; for setting the key connections so as to cause the line spacer to operate whenever the carriage is returned; for setting the key connections so that the carriage return and line-spacing operations may be effected independently, that is to say, so that the carriage may be returned without line-spacing, and so that M the line-spacer may be operated once or any number of times without movement of the carriage; for operating the key connections, so that, even in event the same are set to permit of independent operation of the carriage return and line spacing mechanisms, the two mechanisms may nevertheless be operated together, when desired, without changing the setting: for arresting the carriage at any point of its return by the operation of a key which instantly applies a brake or other stop device, and which may be the key by means of which the return movement was initiated: the control key connections having preferably a normal setting such that a letter-feed pneumatic drive of the carriage, for writing the lines, is

effected whenever a type key is operated; and the connections being automatically returned to such normal setting after each carriage return or, line spacing movement.

Other features of the invention will hereinafter appear by reference to the accompanying .drawings in which:

Figure 1 is a top plan view. of an Underwood typewriter in which the present inventlon is incorporated. Fig. 2 is a view in rear elevation, of the machine shown in Fig. 1, certain parts being broken away or in cross section for better illustration of the apparatus. Fig. 3 is a right hand end view of the machine, a few of the parts being broken away, or in cross section, to show the apparatus more clearly. Fig. 4 is a cross section through the slide-valve chest and cylinder casting near the same, and showing also the several air'connections for controlling the mechanisms. Fig. 5 is a cross section of the 3-way valve shown in Fig. 4, the valve being difi'erently set in the two figures. Fig. 6 is a perspective view showing the mechanical key controlled connections for cutting off the air for a slow carriage return, and for applying the brake to stop the carriage. Fig. 7 shows the key of Fig. 6 when that key is thrown to apply the brake.

ried by arms 6 pivoted to the carriage at either end of the machine, so that by rocking the arms the rack may be lifted fromthe pinion 4 to release the carriage when desired. The release key 7 is integral with one of the arms 6, and when depressed causes the rack to be'lifted. The letter feed action of the escapement is effected from the type bars 8 in the usual manner by means of a universal bar 9 which, by heels 8 on the type bar, vibrates dogs 9 alterwheel 10 so that pinion 4 feeds forward the .n'ately into engagement with the escapement I rack at each key stroke. Thetype keys 11 are carried by key levers 12 pivoted to the main frame at 13, and the movement of levers 12 is transmitted to the type bars by 'means of bell cranklevers 14 pivoted at 15 The platen 16 is carried by the shaft 17 Y which has bearing ateither end in the carriage frame2. A hand wheel 18 is shown at either end of-the-shaft 17," and on'the left hand end of the shaft, looking from the front of the machine, is, the line spacing ratchet wheel 19. The wheel 19 is actuated by pawl 20 carried by the slide 21, which in turn is operated by the line spacing lever 22, the latter being a bell crank lever pivoted at 23 to the carriage frame. Coil spring 24, secured at one end to the slide'21 and at its other end to the frame, acts to hold the slide against the arm 25 of the lever 22, and to return the slide and awl after each operation of the line. spacing wheel. The;line

adapted to bear against an arm fast to the line spacing lever. When, therefore,

I the piston 28 moves forward, it operates the cylinder with the carriage;

line spacing lever 22, and with it, the slide 21 and the line spacing wheel 19, recisely as if' these parts were operated cm the finger-piece 26. The spring 24,- acting on the slide 21, holds the-lever arm 30 against the ='piston stem 29. After the line spacing operation the supply ofair through the tube 28*?is cut off, and acoil spring 31 within the c linder 27 returns the piston to normal position. The cylinder 27 is fast to and is carried by the carriage, and the connection 28 is a flexible connection of suflicient length to permit'of the movement of the As'heretofore explained,'one of the objects of the present invention isto eifect a power return of the carriage, at willfaccoinpanied or not, by a line spacin of the platen, The

line spacing o era-tion as been in art described and wi 1 be further explaine in connection with the carriage return mechan sm.

The carriage return, and the letter feeddrive, are both effected," in the form of the invention herein described, by a compressed air engine.

The cylinder 35' .of' theair engine is suitably supported by brackets 36 from the mainframe 1. of the machine, at the rear thereof. Fig. 2 which is a rear view of the machine shows the piston-36 within the cylinder 35, the stem 37 of the piston passing through one of the heads 38 of the cylinder and beiii extended a considerable distance to the le t. piston stem, there issecured to it 'an arm or t-ie 39 by means of which it is made fast toone of the tie rods 40 of the carriage. It

- follows that with the connections as shown,

the. carriage must always move with the piston, and in the same direction and to the same degree. as the latter. This, however, is not an essential feature of my invention.

Each of the heads 38 of the cylinder is provided with an inlet ort 42, and with an exhaust port 43. F exible connections 44 and 45 res ecti'vely lead from these ports to correspon ing passages 46 and 47 which lead through the walls of the cylinder casing to the valve chest 48. The valve chest is connected by means of *a tube 50 with the compressed air tank 51, and is provided with a suitable exhaust outlet 52, and with an ordinary slide valve 53 to control the inlet and exhaust of air for both ends of the cylinder. The valve, when in the position shown in Fig. 2, is set for .the letterfeed drive of the carriage, and so permits-pas sage of compressed air from the tank 51 through the chest 48, thence (in Fig. 2) through the left hand inlet passage 47, tube 44, and ort- 42 so that when a type key is depressed to operate the esca ement mechanism, the pressure of air om the left hand port 42 causes the piston to advance a step with the carriage until .the latter is arrested again by the escapement mechanism.. As the piston advances from left to right, the air in front of it exhausts through the right hand exhaust port 43, to the tube 45. which connects therewith, thence escaping by passage 46, to-the passage 54 across the inner face of the slide valve and so to the exhaust port 52. The inlet ports '42 are shown as controlled by check valves 55 so: that air forced out of the piston must always be by way of the proper exhaust port. The exhaust port may be regulated as to its capacity by means of a set valve 56, and themovement of the piston' thus steadied or controlled. When the end of a. line is reached, or

- whenever it is desired to return the carriage, the slide valve 53 is moved to the left in Fig. 2 to close the left hand inlet and open the left hand'exhaust, and to open the right hand inlet andclose'the right hand exhaust;

At ,or near the outer end of the bearing in a bracket 64 at the rear of the machine, and extends forward, (see Flgs.

1 and 3) to a bearing 65 in the main frame thelever arm 66 are three keys A, B and C," carried on stemsor plunger-s 67, 68, and 69 respectively. The key stems 67, and 69 are each provided with a'tooth or pin 70, and 71, respectively, which extend over the lever arm 66, whereby when either key A or key C is depressed the pin carried by the stem thereof strikes the arm 66, rocks the shaft 63 and raises the arm 62 with the link 61 to rock the bell crank, 58, thus throwing the slide valve to the left of its Fig. 2 position. A coil spring 72 secured at one end to the lever'arm 62 and at its other. end-to the machine frame, holds the link 61 normally depressed; and the normal position of the slide valve is therefore the position in which it is shown in Fig. 2, that is to say, the position in which it is set for letter-feed or writing. of either key A or C the spring 72 returns the slide valve to this normal position.

When the slide valve is thrown from normal position, whether by key A or key C, the air from the-tank 51 enters the right hand inlet passage 47, tube 44, and inlet port 42 at that end of the cylinder, thus causing the piston to be driven in carriage return direction. Durin this movement the air in front of the plston is exhausted through the left hand port 43, tube 45 and passage 46 to the valve passage 54 and the exhaust 52.

It is desirable, particularly, where the drive is 'a long one, as in the return movement of the carriage, that provision be made at the end of the stroke forcushioning the parts against the shock which would otherwise occur, due to the momentum of the carriage. In the present invention an air cushion is formed for the piston as the latter approaches the end of its stroke sothat the piston and cylinder form in efl'ect a dash pot for gently arresting thecarriage. On

each side of the piston is a boss 75, adapted' to fit closely within a counter-bore 76 in the opposing cylinder head. It will benoted that the exhaust ports 43 leadfrom the counter-bores 76. Therefore when the piston approaches the end of its stroke and the boss enters the counter-bore, the exhaust port is closed, and the. air which remains betweenthe piston and the cylinder head is held and compressed to form a cushion. By regulating the position of the set valve 56, the exhaust can be controlled throughout the entire stroke of thev piston thus governing the movement of the carriage at all times.

After each operation Key C is the key normally used for throw in the slide valve 53 to. return the carriage. Wien, however, it-is desired to return the carriage at a slower speed than the normal, then key A is the key used. Key Ain addi'* tion to operating the levers 66, and 62 to throw the slide valve 53 as heretofore described, has also certain other functions. One of the functions of key A is to choke or close to a greater or less degree, the right .of which is adapted to be'forced into the port passage 47., The upper end of this valve rodhas bearing in the cylinder easting, and its lower end connects with one arm of a bell crank lever 79 pivoted at 80. on a bracket 81 fast to the main frame of the machine. The lower arm of the bell crank 79 is connected by a link 82, which (see Figs. 6 and 3) extends from the rear. of the machine forward and connects near the front of the machine to anarm 83 which is fast on a rock shaft 84. The rock shaft 84 extends likewise with the machine parallel to the front thereof and has bearing at suitable points in the .main frame. At or near the left hand end of the .shaft 84 (look- I keyA.

Carried by the stem 69 of key A isa cam or wedge 87, which, when the key is depressed, engages and depresses the pin 86 on the lever arm 85, thereby rocking the The link 82 being pulled forward rocks the bell crank 49 and raises the valve rod 78 to choke the port passage 47. The more the key A is depressed the" greater will be the movement of the valve rod 78, due' to the increasing thickness of the cam or wedge.

Consequently, according to the amount of depression of key A' the speed of the carriage'returnm'ay' be varied at will. A coil spring 88 hearing against a collar 89 on the .valve rod 78 tends to depress the latter and shaft 85 and drawing forward the link 82.

In Fig. 1 there is shown secured to the carriage frame by bracket arms '91 a socalled brake rod 92 against which a brake shoe 93 is adapted to be pressed upon proper 0 eration of the key A. The brake .shoe 93 see Figs. 3 and 6) is pivoted at 94 to a lug on the cylinder casting and has an arm 100 which extends downward and forward under the cylinder. The forward end of the shoe arm 100- connects with a link 101, the lower end of which is attached to a bell crank 102 pivoted at 103 to a bracket 104 on the lower rear face of the main frame 1. The lower arm of the bell crank 102 is connected by a link 105which extends to the left (see Fig. 2) parallel to the machine. The key stem 69 in addition to having up and down movement in the frame members 112and 113, is adapted to be swung or rocked laterally, as by means of a finger piece 115, in such manner as to bring the key stem into contact with the pin 111 on the lever arm 110 (see Fig. 7). This lateral movement of the key A therefore causes the lever 110, with rock shaft 107 and lever 106, to be turned in such wise as to draw upon the link 105, rock the bell crank 102, drawdown the link 101', and rock the-brake lever, thereby pressing the brake shoe against the brake rod 92, and so stopping the carriage. To permit of the lateral movement ofthe key A, the keyboard 113 is slotted at 116, and stem'hole inthe plate 112 is of a shape indicated at 112. A spring 11?, attached at one end to the frame and at the other end to the lever 110, returns the brake shoe connections to normal position when the key A is released. A coil spring 69' serves to return key A to normal position after each operation thereof, and in view of the size and shape of the hole 112, a washer 133 which loosely fits the key stem is preferably used as a bearing for spring 69. A pin 134 by engagement with the plate 112 limits the upward throw of the key by the spring 69.

A similar spring 67 returns key C to normal position and a similar pin 135 determines the normal position of key C.

It has been noted that the line spacing wheel is operable by means of a pneumatic connection 28 which leads to the cylinder 27 on the carriage. It has also been stated that the platen may be line-spaced from the connection 28 conjointly with the return of the carriage, or independently thereof. The carriage return is effected either at. high speed by key C or at a lower speed by key A, and either of these keys when operated to return the carriage may be made to line space the platen. .To this end, there is provided a branch air passage 118 from the right hand inlet passage 47 (see Figs. land 4) to a three 'way valve 119, to which valve the pipe 28 from the line spacing cylinder 27 also connects, so that when valve 119 is set as shown in Fig. 4, there is an open passage from the compressed air tank 51 by way of the valve chest 48, the passages 47 and 118, through-three way valve 119 and pipe 28, to the line spacing cylinder 27. The movement of the slide valve to Fig. 4 position will therefore cause not only the return of the carriage but also the line spacing of the platen when valve 119 is set as in Fig. 4.

When it is desired to. set the machine for line-spacing independently of the carriage return, the three way valve 119 is moved by means of its key 120 from Fig. 4 to Fig. 5 position, thereby cutting off the tube 28 from the valve chest by way of the ipe 118, and opening a passage from the tu e 28 to a tube 121 which also connects with valve 119. The tube 121 leads from valve 119 to the valve chest 48, and through the latter connects with the compressed air tank 51,

but it has in it a valve 122, which, see in Figs. 2 and 4), is located at or near t e key B and is operable from the k ey B by means of an arm or key 123 and'ahook 124. The

position of the valve 122 when the key B is in normal elevated position is such as to on oil the compressed air from the tube 28. When however the key B is depressed, its

stem 68 by means of the hook 124 and valve key 123 throws the valve'122 into such position as to open the connection between the compressed air tank and the tube 28 by way of the slide valve chest 48. A line spacing operation is therefore effected every time the key B is operated regardless of whether or not the carriage is returned, provided only that the three way valve 120 is set as in Fig. 5. Spring 136 returns key B and valve 122 to normal Fig. 4 position after each operation thereof. When the valve 119 is set as in Fig. 5, and it is desired to both line space and return the carriage, then key B is depressed together with whichever of the keys A or C is used for the carriage return.

For the purpose of adjusting the stroke of the piston 36 and of determining the margina stopping positions of the carria e, the heads 38 are adjustable in the c lin er 35. As shown in Fig. 2 each cylin er head is provided with a rack 125 which lies parallel to the direction of movement of the piston quently of the keys A. and C.

and meshes with a pinion- 126 on a shaft .127 which is suitably sup rted in the cylinder 1 casing. Also fast to iii; shaft 127 is a disk 128 having a circle of pinholes 129 spaced one from the other. According to the angular position of the disk 128, one or other of the pin holes 129 may he broughtinto registration with a corresponding pin hole 130 in the casting 35, and when in such registration a pin 131 may be passed through the registering holes to hold the disk 128, and consequently the rackand cylinder head, in the adjustment selected. The shaft 127 may be provided with a hand wheel 132 'for mov; ing the cylinder head to adjusted position. A rsum of the operation of the machine: is as follows: Assuming that the "character of the work to be such that the .platen is to be line-spaced on each return of the carriage; then before the writing is commenced the valve 119 is set as shown in Fig. 4 and the connections from thetank 51 to the line, s acing cylinder 27 will thereafter be under tile control of the slide valve 53, and conse- The normal position of the slide valve 53 being its Fig. 2 position, an open connection is normally maintained from tank 51 to the left hand end of the cylinder 35, and apressure is therefore maintained on the piston '36 for driving the carria e step by step in letter feed direction as die type keys release the carriage from the escapement mechanism.

The drive in letter feed direction may be a long drive, as in tabulating machines, pro vided the escapement rack be held out of engagement with the escapeinent wheel. When, however, the end of the line isreached or whenever the carriage is to be.

returned, key C is operated, that is, if the; return is to be at the normal high speed:"

otherwise key A is operated. 'Whmhever' of these keys is operated, the slide valve 53 is thrown to Fig. 4 position and the air pressure is applied to piston 36 from the other side. Simultaneously air byway ofpass 118, valve 119 and tube 28 actuates the line spacer. If key A is the key operated for return, then in addition to, and just before the valve 53 is thrown, the valve rod 78 is lifted a greater or less distance (according, to the amount of depression of key A) .to restrict the pass 47 more or less, thus cutting down the amount of air entering the cylinr. der 35, until the return is as slow as mag; be desired. If during the carriage return, it is desired to sto the carriage entirely, the key- A is rocked aterally to Fig. 7 position to apply the brake shoe 93. So long as key A orkey C is held depressed, and unless the. hrakepis applied, the carriage will move to the left until the piston 36 is stopped by the head-38, which as stated may be set for any i desired" margin. Assuming now that the character of the work is such as to make'it the carriage return an line S, .aci-ng mechanisms at certain times, then t e valve 119 "is set as shown in Fig. '5. The line spacer can now be connected with the tank many by way. of valve 122 under control of key B. Whenever key B is operated the line spacer operates regardless of whether there is a carriage movement or not, and regardless of in which direction the carriage may be moving. The line spacing and carriage return movement may however be made together,

operating either key A or key C with 'key It will he noted'that. the 50 and its extension in the passage l7 may be considered a main line of llu'idsupp'ly, while the passage'11-8 and its-extension tube 28 constitute a branch for operating a line-space mechanism. Thetube 1-21, which is controlled by he B through valve 1.22, 'may then be rega-r ed as a shunt passage.

The invention has been .shownfin connection'with an Underwood typewriter, but it ous other typewriters.

It is also evident that the construction and arrangement of the parts may "be variously and .cons'ideraibly altered within the scope of the invention.

Having thus described my invention, '1 claim; I

1. In a typewriting machine, a carriage, a line spacing mechanism, a source of power and connections therefrom for driving t-he carriage and operating. the line spacing mechanism, means for-setting said connec- 1 operate when the carriage is driven and means for setting said connections to permit the line spacing mechanism to be operated independently of the drive of the carriage. 2. In a typewriting machine, acarnage, a line spacingmechanism, a source of power and connections "therefrom tor driving the carriage and operat-in'g the line spacing mechanism, means for isettin tions to drive the carriage at d ifierent speeds to be operated u n drive of the carriage at either speed, an means for setting said connections topermit the line spacing mechanism to be'operatedindependenfl-y of the drive of the carriage. I

- 8. In a typewritmg machine, a carriage, .a source of power and connections therefrom for driving the carriage, means for setting said connections to e-fiect the carriage drive,

and means operable at anytime during the carriage drive to arrest the carriage as soon as said means is operated.

4. In a typewriting machine, a carriage, a source of power and connections there- 'desirable to {have inde endent operation of will be obvious that it is adaptable to variand for' causing the line spacing mechanism although the valve-119 be set as in Fig. 5, by

tions to cause the line spacing mechanism to said connecfrom for driving the carriage, means foi ing connections and the operation of carriage arresting means.

6. In a typewriting machine, a carriage,-

a line spacing mechanism, a source of power and connections therefrom for returning the carriage and operating the line spacing mechanism, means for .setting said connections to cause the. line'spacing mechanism to operate when the carriage is returned and I a means for setting said connections to permit the-linespacing mechanism to be operated independently of the return of the carriage. 7. In a typewriting machine, a carriage, a line spacing mechanism, a source of power and connectionstherefrom for returning the carriage and operating the line spacing mechanism, means for setting said connections to return the carriage at different speeds and for causing the line spacing mechanism to be operated'upon return of the carriage at either speed, and means for setting said connections to permit the line spacing mechanism to be operated independently of the return of the carriage.

8..In a typewriting: machine, a carriage, .a sourceof powerand connections therefrom for returning .the carriage, means for setting said connections to effect the carriage return, means-operable at any time during the carriage return to arrest the carriage as soon as said means is operated, and a single key which controls. both the setting of the carriage driving connections 'and the operation of'carriage arresting means.

9. In a typewriti'ng machine, a carriage, a line spacing mechanism, a source of fluid under pressure, a cylinder with a piston therein, said piston bein connected to the carriage and said cylin er having a fluid connection to the source of the fluid, a valve controllin the fluid connection to thecylinder, a uid connection for operating the line spacin mechanism, said last named connection eing branched 'fromsaid cylinder connection at a point between the cylinder'and the aforesaid valve, and key controlled means for operating said valve to simultaneously return the carriage and operate the line spacer.

10. In a typewr tin'gi machine, a carriage,-

a. line spacing mechanism, a source of fluid under'pressure', a 0 lm or with a piston therein, said piston. eing connected to the carriage and said cylinder havin a fluid connection to the source of the flui a valve contro-llin inder, a uid connection for operating the line spacing mechanism, said last named connection being braniched from said cylinder connection at a point between the cylinder and the aforesaid valve, one key controlled means for operating said valve, and another key controlled means for'modifying the fluid capacity of said cylinder connection and for operatin said valve, whereby according to which 0 said key controlled means is operated, the carriage may be returned at a greater or less speed and the line spacer simultaneously operated.

11. In a typewriting machine, a carriage. a line spacing mechanism, a source of fluid under pressure, a cylinder with a piston therein, said piston being connected to the carriage and said cylinder having a fluid connection to the source of fluid, means for opening and closing said fluid connection and for regulating the volume of fluid admitted to the cylinder, whereby, according to the volume of fluid admitted, the carriage will be driven at a greater or less speed by the piston.

'12. In a typewriting machine, a carriage, a line spacing mechanism, a source of fluid under pressure, a cylinder with a piston therein, said piston being connected to the carriage and said cylinder having a fluid connection to the source of fluid, means for opening and closing said fluid connection and for regulating the volume of fluid admitted to the cylinder, whereby, according to the volume of fluid admitted, the carriage will be driven at'a greater or less speed by the piston, said fluid admitting and regul ting means comprising two keys, one of which is operated for high speed and the other for lower speed of carriage drive.

- 13. In a typewriting machine, a carriage, means under the control of fluid pressure for driving said carriage, a pressure-varying device for efl'ecting theoperat-ion of said carriage driving means, and key controlled means for regulating the variation of fluid pressure 'in said device whereby said ourriage driving means maybe operated at different speeds.

14. In a typewriting machine, a carriage, a line spacing mechanism, a source of fluid under pressure, a cylinder with a piston therein, said piston being connected to the carriage and said cylinder havin a fluid connection to'the source of the flui ,a valve controllin the fluid connection .to the cylinder, a uid connection for operating the line spacing mechanism, said last named connection eing branched from said cylinder connection at a point between the cylinder. and the aforesaid valve, means for re- StlICtlTlD said cylinder connection between the fluid connection to the cylthe cylinder and said valve, key controlled means for operating said valve alone, and other key controlled means for eperating said restricting means together with said valve.

15. In a typewriting machine, a carriage, a source of fluid under pressure, a cylinder with a piston therein, said piston being connected to the carriage and said cylinder having a fluid connection to the source of fluid, a valve controlling said fluid connection, means between the valve and the cylinder for restricting said connection, key controlled means for operating said valve to admit fluid to the cylinder suflicient to return the carriage at considerable speed, and key controlled means for operating said restricting means as well as the valve, whereby the fluid admitted to the cylinder will be such as to return the carriage at a. lesser speed.

16. In a typewriting machine, a carriage, a source of fluid under pressure, a cylinder with a piston therein, said piston being connected to the carriage and-said cylinder having a fluid connection to the source of fluid,

a valve controlling said fluid connection, means between the valve and the cylinder for restricting said connection, key controlled means for operating said valve to admit fluid to the cylinder suflicient to return the carriage at considerable speed, and

key controlled means foroperating said restricting means as well as the valve whereby the fluid admitted to the cylinder will be such as to return the carriage at a lesser speed, and a brake operable to arrest the carriage at any desired point onthe return of the same. i

17 In a typewriting machine,.a carriage, a carriage return mechanism operable by fluid pressure, a line spacing mechanism, an actuator for the line spacing mechanism also operable by fluid pressure, and means whereby the carriage return and line spacing mechanisms may be operated together or singly. I

18. In a typewritingmachine, a carriage, a carriage return mechanism operable-by fluid pressure, a line spacing mechanism, an actuator for the line spacing mechanism also operable by fluid pressure, and means for setting the fluid connections whereby the. carriage return and line spacing mechanisms may be operated togetheror singly.

19. In a typewriting machine,.- a carriage, a carriage return device having-a connection to a source of fluid under pressure, a line spacing mechanism, an actuator for said line spacing mechanism having a connection branched from said first named fluid connection, a valve in saidfirst named connection between the source of pressure and the branch to the line spacer, key controlled means for operatingsaid valve whereby the carriage return and line spacing mechanisms may be operated together, a shunt connection from a point of said first connection between said valve and the source of fluid to a point of said branch to the line spacer beyond said valve, a: second valve at the juncture of said shunt and said line spacer branch whereby said branch may be closed either to the shunt or to the fluid supply ex cept by way of the shunt, according to the setting of said second valve, and key con trolled means for opening and closing the passage through the shunt so that when the second valve is set for operationof the line spacer by way of the shunt, said key controlled means determines that operation independently of thecarriage return;

20. In a typewriting machine, a carriage, a carriage return device having a connection to a source of fluid under pressure, a line spacing mechanism, an actuator for said line spacing mechanism having a connection branched from said first named fluid connection, a valve in said first named connection between the source of pressure and the branch to the line spacer, key controlled means for-operating said valve whereby the carriage return and line spacing mechanisms may be operated together, a shunt connection from a point of said first connection between said valve andthe source of fluid' to a point of said branch to the line spacer beyond said valve, a second valve at the juncture of said. shunt and said line vspacer branch whereby said branch may be supplyexcept by way ofthe shunt, according to the setting of said second valve.

21. In a typewriting machine, a carriage, a carriage return device having a connection to a source of fluid under pressure, a line spacing mechanism, an actuator for saidline t spacing mechanism having a connection branched from said first named fluid connection, a valve in said Ifirst named connection betweenthe sourceof pressure and the branch to the line spacer, key controlled means for operating said valve whereby the carriageereturn and line spacing mechanisms may be operated together, a shunt connection from a point of said first connection between said valve and the source of fluid to a point of said branch to the line spacer beyond said valve, a second valve at the junc ture of said shunt and said line. spacer branch whereby said branch may be closed either to the shunt or to the fluid supply except by way of the shunt, according to the setting of said second valve, and key controlled means for opening and closing the passage through the shunt so that when the second valve is set for operation of the line spacer by way of the shunt, said key controlled means dcterminesthat operation independently ofthe carriage return, said first second'valveds set' for independent opera and secona Key controlled means being 0 erable together, so that,'even though said tion of the carriage return and line spacer,

the two mechanisms may be. operated ,to-

gether by conjointroperation of the two key contrplling means. i

'22. In a'typewritin'g machine,the combination with a main .fluid connection for returning the carriage, of a valve controlling said main'con'nection, a branch of said connection controlled bysaid valve for linespacingth'e' platen in'said carriage, a valve for shutting ofl? said-branch from said main connection, and a shunt comprising a valve for independently line-spacing said platen.

23. In a-typewriting machine," the combination with a traveling carriage anda platen therein,- of a key-operated means for simul-' taneously connecting said carriage-- to a source of power to return 'it and to linespace" platen, :a'nd means-for simultaneously operating said carriage and platen by the operation of two keys.

24. In a typewritin'g machine, the combination with atraveling carriage and a platen -fast thereon, of abrake arranged to seize said rod, a fluid power mechanismto' drive the carriage, anda key connected to operate the brake and controlling-the supply of power to the carriage.

nation with a traveling carriage, of a source of power for moving said carriage, a key for varying-the power,- a brake, and means for operating said brake from said key.

29, In a-typewritingmachine, the combinationwith a traveling carriage, "of power means for moving said carriage,--a line-space mechanism for said carriage, power means fol-operating sald 11ne=space-mechan1sm; a

.key for moving said carriage and-operating said line-spaoe-mechanism by saidsource of power, and means controlled by saidkey forvarying the power means for movin said carriage without varying it as'applie to said line-space mechanism.

30. 111-9. typewriting-machine, the combination with a traveling carriage and a linespace mechanism, power means for operating said mechanism and moving said carriage, a-hrake for said carriage,- and a single key for connecting said power means to said carriage and-mechanism and for operatlng said brake.

31. The combination with a traveling car riage, of power means for returning it, a brake for said carriage, a key arranged to be depressed to cause said means to return said carriage, and -means for operating said brake by rocking-said key.

CHARLES H. VOGEL Witnesses:

A. E. GALPIN, G: C. WO0DWARD.- 

